The ui at the top is a good way to track play progress. By playing I find out the ui indicates dodge score & chances to get hit by a ball.
The movement to jump over a ball was good enough.
I found the balls appearing on screen at a good pace, allowing time to anticipate the next lot of balls. The alternation of balls from left/right is neat. The variation of distance between the balls on screen at the same time was good. The variation of ball speed was good also, except when balls would meet close in the center, seemed inconsistent and messy. It would be better for balls to spawn in patterns which would gradually increase in difficulty.
It is good to get back into a new round of playing after losing, but I would prefer the game stop playing after losing so balls weren't moving constantly.